| 摘要 |
A mobile telephone unit 1 is disclosed, which is capable of being used as a standard mobile telephone 3 for initiating and receiving telephone calls on a GSM network, or, when connected to a second section 13 becomes capable of initiating and receiving telephone calls on a satellite-based network. The first section 3 acts as an interface for the second section 13, providing the keypad 5, display 7, earpiece 9 and microphone 11 for the second section. The second section 13 contains all the means necessary for initiating and receiving calls within the satellite based network, whilst also being provided with means for powering the unit 1. The user can initiate and receive telephone calls on the satellite-based network by using the interface means on the first section 3. |
